Web 3.0?

Stephenson's Metaverse coming shortly to a device near you:

Croquet is a combination of computer software and network architecture that supports deep collaboration and resource sharing among large numbers of users within the context of a large-scale distributed information system. Along with its ability to deliver compelling 3D visualization and simulations, the Croquet system's components are designed with a focus on enabling massively multi-user peer-to-peer collaboration and communication.

Croquet is built on top of Squeak, and Alan Kay is one of the head honchos running the show. This could be one to watch.

www.croquetproject.org